bug#64596: 30.0.50; On FIXME: in src/buffer.c:1481 (force-mode-line-update)

[Eli Zaretskii]

> From: Ihor Radchenko <yantar92@posteo.net>
> Cc: monnier@iro.umontreal.ca, 64596@debbugs.gnu.org
> Date: Wed, 19 Jul 2023 15:50:20 +0000
> 
> +    . decide which windows on which frames need their windows
>                    ^buffers?
> +      considered for redisplay

Not buffers, windows.  Redisplay works by windows, not by buffers.
When it decides to work on a window, it temporarily makes that
window's buffer current.

> +   For buffer parts that have been changed since the last redisplay,
> +   `redisplay_window' __constructs__ a second glyph matrix ___is 
> constructed___,

Fixed.

> +   part of the display by scrolling lines.  The actual update of the
> +   display of each window ___by comparing the desired and the current
> +   matrix___ is done by `update_window', which calls functions which draw
> 
> maybe put that clause after by `update_window'.

I added commas instead.